XO 2.2.3 No Restart
XO is like Search, Plus Your World except instead of recommending Google Plus results wayyyy tooo much , XO recommends results from awesome websites you love. It gives you a fun new interface to discover search, and the websites you actually want.
This add-on has been preliminarily reviewed by Mozilla. Learn more
This add-on is not compatible with your version of Firefox because of the following: